82598EB Datasheet, PDF (186/596 Pages) Intel Corporation – Intel® 82598EB 10 Gigabit Ethernet Controller Datasheet

Intel^® 82598EB 10 GbE Controller - Hardware EEPROM Sections
3.4.3.6.5 Auto Negotiation Defaults – Offset 4
Bit
15:1
4
Name
KX Support
13:1
2
Pause Bits
11
RF
10:9
AN Parallel
Detect Timer
8
AN RX Loose
Mode
7
AN RX Drift
Mode
6:2
AN RX Align
Threshold
1:0
Reserved
Default
Description
1b
The value of these EEPROM settings are shown in bits A0:A1 of the Technology
Ability field of the auto negotiation word.
00b = Illegal value.
01b = A0 = 1b, A1 = 0b. KX supported. KX4 not supported.
10b = A0 = 0b, A1 = 1b. KX not supported. KX4 supported.
11b = A0 = 1b, A1 = 1b. KX supported. KX4 supported.
Mapped to AUTOC.KX_support.
0x00
The value of these bits is loaded to bits D11:D10 of the link code word (pause data).
Bit 12 is loaded to D11.
Mapped to AUTOC.PB.
0b
This bit is loaded to the RF of the auto negotiation word.
Mapped to AUTOC.RF.
00b
Configures the parallel detect counters.
00b = 1 ms.
01b = 2 ms.
10b = 5 ms.
11b = 8 ms.
Mapped to AUTOC.ANPDT.
1b
Enables less restricted functionality (allow 9/11 bit symbols).
0b = Disables loose mode.
1b = Enables loose mode.
Mapped to AUTOC.ANRXLM.
1b
Enables the drift caused by PPM in the RX data.
0b = Disables drift mode.
1b = Enables drift mode.
Mapped to AUTOC.ANRXDM.
00011b
Sets the threshold to determine that the alignment is stable. Sets how many stable
symbols to find before declaring the AN_RX 10b symbol stable.
Mapped to AUTOC.ANRXAT.
00b
Reserved.
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